15989147 has 2 divisors, whose sum is σ = 15989148. Its totient is φ = 15989146.

The previous prime is 15989131. The next prime is 15989153. The reversal of 15989147 is 74198951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15989147 - 2⁴ = 15989131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15989098 and 15989107.

It is not a weakly prime, because it can be changed into another prime (15989647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7994573 + 7994574.

It is an arithmetic number, because the mean of its divisors is an integer number (7994574).

Almost surely, 2^15989147 is an apocalyptic number.

15989147 is a deficient number, since it is larger than the sum of its proper divisors (1).

15989147 is an equidigital number, since it uses as much as digits as its factorization.

15989147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 44.

The square root of 15989147 is about 3998.6431448680. The cubic root of 15989147 is about 251.9272224121.

The spelling of 15989147 in words is "fifteen million, nine hundred eighty-nine thousand, one hundred forty-seven".